WARNING: This page is about a different car, the 2018 BMW X5, 2017 BMW X5, 2016 BMW X5, 2015 BMW X5, and 2014 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Tool Set (2160009)
Courtesy of BMW OF NORTH AMERICA, INC.
NOTE:
A set of the BMW hydraulic tool system for wheel bearings and output shafts (basic set for BMW, consisting of 81 64 2 155 744, 81 64 2 155 745, 81 64 2 155 746)